Padlock.



L. SNYDER.

PADLOCK.

APPucnmn FILED OCT. 25, 1916.

Patented Dec. 26, 1916.

INVENTOR.

ATTORNEY.

LOUIS SNYDER, or HARTFORD, connncrrour.

n rAnLock.

Specification 01' Letters Patent.

Patented Dec. 26, 1916.

Application filed October 25, 1916. Serial I0. 127,568.

' To all whom itmay concern:

Be it known that I, LOUIS SNYDER, a citi-v zen of the United States, residing at Hart'- ford, in the county of Hartford and State of Connecticut, have invented a new and'useful Improvement in Padlocks, of which the following is a specification.

This invention relates to the types of p'adlocks which are so constructed that they will 1o unlock and the hasps will spring open when keys of the proper shape are merely thrust into the keyhole. a

The object of the invention is to produce a simple and cheap padlock of this class which is so constructed that it is very strong and s0 protected that it is very secure. In atv taining this end, the tumbler which engages the hasp and looks it closed, the guardwhich protects the locking tumbler and which must be lifted by a properly shaped,

key-before the tumbler can be reached and moved for unlocking the hasp, and theshieldwhich co'tiperates with the guard in protecting the tumbler against being operw 25. ated by anything but the proper key, are arranged in operative position on a back plate, and then the casing. is cast about them so as to be in a single piece with no openings but the two for the ends of the hasp and the 80 keyhole.

In the views which illustrate an embodiment of the invention Figure 1 shows a section of a padlock with the hasp locked in closed position. Fig. 2 is a similar view 85 with a key'inserted and the beep unlocked and thrown open. Fig. 3, shows an edge view of the padlock. Fig. 4 is a section on %he plane indicated by the line 4-4 on ig. 1. I 1

The casing 1 is cast to the desired shape in a single piece of any suitable metal. )ne end of the has 2 is secured in an opening in the end of t e casing by a pivot 1n 3 in such manner that the other end of t e hasp may be swung into and out of the other openin in the end of the casing. A spring 4 coile about the pivot pin an havin one end engaging the wall or casing an the other end engagin the has tends to throw 6. the hasp open. T 0 end 0 the hasp inside of the pivotris shaped to provide a locking shoulder 5.

In one side of the casing and conforming approximately to the outline of the side wal 5B is a plate 6. The locking tumbler 7 is'pivoted to this plate by a stud 8. A spring 9 shoulder 5 and prevents the has from turn-f cured to a block 12 that is fasteneclto draws the tumbler so that its upper end 112, when'the hasp is closed, engages the lockingv ing open. The guard 11, whic is formedof aistrip of spring metal, has one ends e back'plate. The other end of the guard bent lnward 'so as to press tightly against-"3'- the back plate and form a barrier 13 68; tween'the keyhole 14 and the lower endr1 5 of the locking tumbler. This barrler must be moved outward transversely with rela-fl. tion to the plane of the locking tumbler b forethe lower end of the locking "tumbleri're can be engaged by anything for swinging it so as to unlock the hasp. On the outer SldG of this barrier at the end of the guard andl; preijectin'g toward the keyhole 1s thin we ge-shaped wing 16. The location f this 78 wing may be varied as desired according to the shape of the key to be used. Extending fromthe side wall ofthe casing adjacent to the up er edge of the keyhole to the upper edgeo the guard is a shield 17. This shield 80' prevents the thrusting of a wire or other pieoeof metal past the guard and into engagement with the lower end of the tumbler or unlocking it.

When a key 18 of the proper shape is thrust throughthe keyhole, it first engages the wing 16 and lifts' the barrier 13 on the.

end of the guard out of the way, and then it engages the lower end 15 of the tumbler and turns it so that the hasp is released and its spring allowed to throw it open. The key must be of such shape that it can beinserted into the key llOlBjdb must be of such shape that it will engage the wing and lift the barrier on the endof the guard; and it also '35 must be of such shape and thickness tha after the barrier has been lifted out of the; way it will engage the lower end of the locking tumbler which is spaced a little dis- I tance in front of the back plate so that if the guard should be lifted byv a thin piece or 'metal the end of such a piece would not engage with but would passback Oif the end of the tumbler.

The operatin mechanism of this padlock 'consists of but ew partsand these arevery;

outline of the keyhole and also by changing,

the location of the 'wingon the end of the.

guard which is engaged-by the ke and utilizedto lift the barrier transverse y from in front of the lower end of the locking tumbler. g

The invention claimed is;

1. A padlock having a casing with a keyhole, a-hasp w i one end pivoted in the easin and its at 'er end adapted to swing into an out of the casing, a spring tendin to throw the heap open, a pivoted tumbler aving an end designed to engage the pivoted end of the hasp and hold it closed and having an end extending into the line with the keyhole, a spring tending to retain the tumbler in locking position, a spring guard having one end fixed and the other end yielding transversely with relation to the "plane of movement of the tumbler, said yielding end having a barrier normally pro Jecting against the side of the casing betweenthe keyhole and the end of the tumblex, and a weed ing win projecting from said barrier an design when properly engaged, to lift the barrier transversely out of the path from the keyhole to the lower end of the tumbler.

2. A padlock having a casing with a keyhole, a hasp with one end pivoted in the casing and its other end adapted to swing into and out of the casing, a spring tending to throw the hasp open, a pivoted tumbler having an end designed to engage the hasp and hold it closed and having an end extending into line with tl keyhole, a spring tending to retain the tumbler in locking position, a spring guard having a barrier normally projecting between the keyhole and the end of the tumbler, a \vedging wing projecting from said barrier and designed,when properly engaged, to lift the guard transversely out of the path from the keyhole to the lower end of the tumbler,,ond

a shield extending from the wall of the casing adjacent to the edge of the keyhole to the guard.

LOUIS SNYDER. 

